1/* PKCS#7 crypto data parser internal definitions
 2 *
 3 * Copyright (C) 2012 Red Hat, Inc. All Rights Reserved.
 4 * Written by David Howells (dhowells@redhat.com)
 5 *
 6 * This program is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU General Public Licence
 8 * as published by the Free Software Foundation; either version
 9 * 2 of the Licence, or (at your option) any later version.
10 */
11
12#include <linux/oid_registry.h>
13#include <crypto/pkcs7.h>
14#include "x509_parser.h"
15
16#define kenter(FMT, ...) \
17	pr_devel("==> %s("FMT")\n", __func__, ##__VA_ARGS__)
18#define kleave(FMT, ...) \
19	pr_devel("<== %s()"FMT"\n", __func__, ##__VA_ARGS__)
20
21struct pkcs7_signed_info {
22	struct pkcs7_signed_info *next;
23	struct x509_certificate *signer; /* Signing certificate (in msg->certs) */
24	unsigned	index;
25	bool		trusted;
26	bool		unsupported_crypto;	/* T if not usable due to missing crypto */
27
28	/* Message digest - the digest of the Content Data (or NULL) */
29	const void	*msgdigest;
30	unsigned	msgdigest_len;
31
32	/* Authenticated Attribute data (or NULL) */
33	unsigned	authattrs_len;
34	const void	*authattrs;
35	unsigned long	aa_set;
36#define	sinfo_has_content_type		0
37#define	sinfo_has_signing_time		1
38#define	sinfo_has_message_digest	2
39#define sinfo_has_smime_caps		3
40#define	sinfo_has_ms_opus_info		4
41#define	sinfo_has_ms_statement_type	5
42	time64_t	signing_time;
43
44	/* Issuing cert serial number and issuer's name [PKCS#7 or CMS ver 1]
45	 * or issuing cert's SKID [CMS ver 3].
46	 */
47	struct asymmetric_key_id *signing_cert_id;
48
49	/* Message signature.
50	 *
51	 * This contains the generated digest of _either_ the Content Data or
52	 * the Authenticated Attributes [RFC2315 9.3].  If the latter, one of
53	 * the attributes contains the digest of the the Content Data within
54	 * it.
55	 */
56	struct public_key_signature sig;
57};
58
59struct pkcs7_message {
60	struct x509_certificate *certs;	/* Certificate list */
61	struct x509_certificate *crl;	/* Revocation list */
62	struct pkcs7_signed_info *signed_infos;
63	u8		version;	/* Version of cert (1 -> PKCS#7 or CMS; 3 -> CMS) */
64	bool		have_authattrs;	/* T if have authattrs */
65
66	/* Content Data (or NULL) */
67	enum OID	data_type;	/* Type of Data */
68	size_t		data_len;	/* Length of Data */
69	size_t		data_hdrlen;	/* Length of Data ASN.1 header */
70	const void	*data;		/* Content Data (or 0) */
71};